How many movies have Fan Chuen-Yam and Roy Cheung Yiu-Yeung collaborated on?

They have worked on 5 movies together! Their first movie together was Aces Go Places V: The Terracotta Hit (1989) while their highest rated movie together was Prison on Fire II (1991). They have not worked together since Her Name Is Cat 2: Journey To Death (2001). They are most known for their crime films together.